What is the best upgrade for PC performance for work?

Question

Computers

Good evening.

Such situation: recently the computer began to work slowly. More precisely, he needs time to overclock to start working. For example, when opening a large project in VSCode, you need to wait 10 minutes for it to load all the extensions, etc. And if you then do not touch the open project for some time, then when you re-deploy the window, you again have to wait.
Also in the browser, pages can take a long time to load if there was a simple computer.
There are no problems in games.

Characteristics:
Mother: Z170-k
Proc: i5-6600k
RAM: Dual-channel hyperx ddr4 2133 two dies of 8gb
Hard with OS: HDD WD Blue 7200rev 1TB
Video: RX580

I didn’t see this much before, although there were also loads.
Want to know what to upgrade first? And for what? I sin on a hard one, I want to take an ssd, but maybe something else could be the matter? Still, there is a lot of data on the hard one - there is no time yet to transfer them.

Answer 1

I'm not sure, but maybe a cant with Windows.
At least check your computer for viruses even with the usual free dr.web
Didn't find it and continues? - Try to put in the power saving settings so that the processor runs at least 50% performance or even 90%.
Again, it does not help - buy a new and normal ssd, preferably 240GB + (they make less now from low-grade leftovers). And install clean windows there.
There is another option that there are problems with blowing, and until the percentage passes a certain line, the cooler will not start to drive air faster and cool it. But this is from the category of fiction, but there were cases in words ... Here you need to try to update the BIOS, but if you don’t know how at all and are afraid, it’s better not to touch it yourself.

Answer 2

The person subscribed - I remembered my question.
In general, I bought myself a 500GB ssd - Samsung 860 Evo, the most popular, so to speak. And things went uphill - I cloned a purely C: partition on it, allocated the remaining space for work - now Windows loads in 10 seconds, and working projects in VSCode instantly become alert.
So if anyone decides - take it, you will not regret it.